I’m not aware of any restrictions. Generally it seems like most people mention that kind of thing in their tea reviews, but I have seen discussion threads where people mention companies they are really impressed with. Maybe put it in the Tea Companies and Promotions category? Hopefully someone else with a bit longer experience on here than me will chime in. :)

The only big no no is that a tea company isn’t supposed to review their own tea and rate it,and likewise nobody is supposed to purposely downgrade or upgrade tea’s which I’ve seen also, as a way of padding or insulting a tea company.